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Screening method of video test stream and system thereof

A screening method and code stream technology, applied in the field of video test code stream screening methods and systems, can solve the problems of inability to guarantee video decoding chip decoding performance test requirements, low efficiency, etc., to reduce video test code streams and accelerate testing. effect of the process

Active Publication Date: 2009-12-09
南通市崇川科技园投资发展有限公司
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AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a method and system for screening video test code streams, which are used to solve the problems that the existing test methods have low efficiency and cannot guarantee to meet the decoding performance test requirements of video decoding chips

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  • Screening method of video test stream and system thereof
  • Screening method of video test stream and system thereof
  • Screening method of video test stream and system thereof

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Embodiment Construction

[0041] In order to solve the problems existing in the prior art, an embodiment of the present invention provides a method and system for screening video test code streams. Application of the technical solutions provided by the embodiments of the present invention can screen out a small number of test video files with the same encoding characteristics as the large number of video files from a large number of video files, and use the small number of test video files to test the decoding performance of the video decoding chip. Compared with the prior art, a large number of video files are used to test the decoding performance of the video decoding chip, which reduces the video test stream and accelerates the test process; in addition, according to the code coverage information of the test video file, it can be known that the screened test video file is Whether the coverage of encoding characteristics meets the decoding performance test requirements of the video decoding chip, and ...

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Abstract

The invention provides a screening method of video test stream and a system thereof, which is used for solving the problems that the existing test methods have lower efficiency and can not ensure to achieve the decoding performance test requirements of video decoder chips. The method comprises the following steps: determining a plurality of video files with the same coding standard; extracting code coverage range information of a plurality of video files one by one, and determining a first code overall coverage rate of a current video file and all previously extracted video files according tothe code coverage range information of the current video file and all previously extracted video files after extracting the code coverage range information of one video file; determining a second code overall coverage rate of all previously extracted video files; determining the current video file to be the test video file when the first code overall coverage rate is greater than the second code overall coverage rate. The technical proposal of the invention reduces the video test stream, accelerates the test process, and ensures to achieve the decoding performance test requirements of video decoder chips.

Description

technical field [0001] The invention relates to the technical field of video testing, in particular to a screening method and system for video testing code streams. Background technique [0002] Video testing and analysis technology is mainly used to evaluate the decoding and playback quality of video files, thereby replacing the observer's subjective visual evaluation as a standard for the observer's satisfaction with video quality. [0003] In the prior art, different video files have different or similar coding characteristics, and these coding characteristics include macroblock type, coding mode, delay characteristic, prediction mode, luminance sampling rate and bit rate, etc. In order to ensure that the video decoding chip can correctly decode video files with various encoding characteristics, it is usually necessary to test the decoding performance of the video decoding chip, and the testing method is usually to use a large number of video files to directly test. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N17/00
Inventor 于烨
Owner 南通市崇川科技园投资发展有限公司
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